EP 1052488 B1 20080102 - Procedure and device for measuring the torque of an internal combustion engine
Title (en)
Procedure and device for measuring the torque of an internal combustion engine
Title (de)
Verfahren und Vorrichtung zur Messung des Drehmomentes einer Brennkraftmaschine
Title (fr)
Procédé et dispositif de mesure du couple d'un moteur à combustion interne
Publication
Application
Priority
FR 9905917 A 19990510
Abstract (en)
[origin: EP1052488A1] The invention makes an estimation of the average couple over an engine cycle by use of a sensor for measurement of the instantaneous angular velocity and an algorithm that integrates the engine dynamic and the combustion model. The invention transforms the velocity signal into frequency space and calculates the couple harmonics from the velocity harmonics. Device a first device (7) for carrying out a Fourier transform (FFT) of the flywheel instantaneous angular velocity to yiel harmonics up to the npth for each engine cycle, a dynamic model (8) of the engine crankshaft with torsion, connected to the firs device to determine harmonics of the average fuel couple as a function of the angular velocity harmonics. A second device (9) provides a correlation between the average gas couple and its harmonics.
IPC 8 full level
G01L 3/00 (2006.01); G01M 15/00 (2006.01); G01M 15/04 (2006.01)
CPC (source: EP)
G01L 3/00 (2013.01); G01M 15/046 (2013.01); F02D 2041/288 (2013.01); F02D 2200/1004 (2013.01); F02D 2200/1015 (2013.01)
Designated contracting state (EPC)
BE DE
DOCDB simple family (publication)
EP 1052488 A1 20001115; EP 1052488 B1 20080102; DE 60037612 D1 20080214; DE 60037612 T2 20090108; FR 2793558 A1 20001117; FR 2793558 B1 20010706
DOCDB simple family (application)
EP 00401231 A 20000505; DE 60037612 T 20000505; FR 9905917 A 19990510